# A145070 (b-file synthesized from sequence entry) 1 3 2 9 3 20 4 40 5 77 6 147 7 282 8 546 9 1067 10 2101 11 4160 12 8268 13 16473 14 32871 15 65654 16 131206 17 262295 18 524457 19 1048764 20 2097360 21 4194533 22 8388859 23 16777490 24 33554730 25 67109187 26 134218077 27 268435832 28 536871316 29 1073742257 30 2147484111